Configurar Firewall y DKIM/SPF en WHM

@kuldeepvk

Hi, I have 10 years of experience and knowledge as system administrator setup and management of different Linux Web Hosting Servers, AWS servers,Cloud Servers, GPU Servers, Server Monitoring, Server Security, Server Optimisation, Mailing Servers, Email Marketing, SSL, DNS, Apache, Nginx, etc with Cpanel, Plesk, Virtualmin or other panels. Services such as cPanel/WHM, Plesk, Virtualmin LAMP Stack, Tomcat, MySQL/MariaDB, Zimbra, Postfix mail server, Mailenable, smarter mail, MS SQL,AWS , etc. Please discuss to start. I am not able to provide documentation for the process. Thank you

@talhamq

With over a decade's worth of experience in server management and network security, I am confident in my ability to optimize your WHM-cPanel server for flawless email delivery. As an expert in DNS and Linux administration, I have developed a deep understanding of tools like Exim and Inmunify, which are key components in your current setup. I am also well-versed in other server management panels such as PLESK and Website Panel, allowing me to bring a comprehensive perspective to your project.

@amiexpart

Hello dear, I can fine-tune your WHM/cPanel server immediately to ensure 100% clean transactional email delivery via Exim. I have strong experience with email reputation hardening on cPanel servers, including Immunify and CSF firewall tuning, safely closing unused ports without breaking mail flow, configuring and validating DKIM, SPF, and alignment, plus end-to-end delivery testing using mail-tester, Gmail inbox checks, and log verification. I will document every change clearly so you can replicate it on other servers, and I’ll stay until results show inbox delivery with green scores and clean headers. Thanks, Amita.

@OutsourceMan

⭐⭐⭐⭐⭐ Hola, gracias por compartir los requisitos. En CnELIndia, junto con Raman Ladhani, podemos ayudarte a completar este proyecto de forma segura, documentada y con resultados medibles. Primero realizaremos una auditoría completa del servidor WHM/cPanel, Exim e Inmunify para identificar riesgos de reputación y puertos innecesarios. Ajustaremos las políticas del firewall optimizando Inmunify y, si aporta mayor control y trazabilidad, propondremos e implementaremos CSF sin interrumpir el flujo de Exim ni servicios críticos. Luego generaremos y habilitaremos DKIM correctamente desde WHM, alineándolo con el dominio principal, y configuraremos SPF preciso y restrictivo. Validaremos la correcta propagación DNS y alineación con DMARC para maximizar la reputación de envío. Posteriormente ejecutaremos pruebas reales de entrega usando mail-tester, Google Postmaster Tools y análisis de logs de Exim, ajustando hasta obtener puntuaciones verdes y confirmación de Inbox. Finalmente documentaremos cada cambio (firewall, DNS, Exim y seguridad) para que puedas replicarlo fácilmente en otros servidores, entregando evidencias claras en logs y reportes.

@zulqrn

Hi there, I'm an IT Professional with over 7 years of hands-on experience in Server, Network, Firewall, AWS, Virtualization, Google Workspace, Scripting, Migrations, Office365 & IT Support. I have helped many clients with this and would love to assist you in this. Please drop me a text in chat box to discuss further. I hope to talk to you soon. Thank you!

@jazz78p

Hola, soy Leo Sarmiento, desarrollador Web/Full-Stack con 10 años de experiencia. Me especializo en la optimización de infraestructura de servidores para garantizar la entrega perfecta del correo electrónico. He revisado tu necesidad de afinar WHM/cPanel con Inmunify y Exim. Mi enfoque va más allá de activar DKIM/SPF; integro la seguridad del firewall (CSF/Inmunify), la autenticación de dominio y las pruebas de reputación para construir un ecosistema de envío confiable que evite el spam de forma permanente.

@adily1

Hi Gabriel J., I understand you're looking to fine-tune your WHM-cPanel server for impeccable transactional email reputation and to ensure no messages land in the spam folder. I specialize in optimizing Exim configurations and enhancing email deliverability through DKIM, SPF, and firewall policies. With over 6 years of experience in Linux, Web Hosting, and System Administration, I can optimize your Inmunify settings or propose CSF for improved security. I'll thoroughly verify DKIM and SPF configurations and conduct extensive testing using tools like mail-tester and Google Postmaster to achieve that green score you desire. You can trust my expertise as I will meticulously document every change for easy replication on other servers. Here are my portfolio links for your review: https://www.freelancer.com/u/adily1 Looking forward to helping you achieve flawless email delivery. Thank you, Adil Yousuf

@rogelitoc

Hello, how are you? I've carefully reviewed the description and I am confident I can deliver it on time because I have extensive experience in server optimization and email deliverability. I understand that you need to fine-tune your WHM-cPanel server to ensure that transactional emails are sent with an impeccable reputation and never end up in the spam folder. I have hands-on experience in WHM, cPanel, Exim, DKIM, and SPF configurations. Here is my approach as follows: - Optimize Inmunify rules and propose CSF if it adds value, while ensuring no disruption to Exim functionality and closing unnecessary ports. - Generate and enable DKIM and SPF records aligned with your main domain, making sure they propagate correctly in DNS. - Conduct thorough tests using mail-tester and Google Postmaster until we achieve a green score and provide evidence of successful inbox delivery. I am ready to start immediately and can deliver the result fast. I'd love to discuss in more detail. Best Regards.

@mehranriaz0

Greetings, It looks like you need some expert help to fine-tune your WHM-cPanel server for optimal email delivery. Ensuring that your transactional emails have a strong reputation and don’t end up in spam is crucial. I’ll focus on optimizing your Inmunify firewall settings, implementing DKIM and SPF correctly, and running tests to confirm everything is working perfectly. My approach includes tightening the firewall rules while maintaining Exim’s functionality, generating DKIM and SPF aligned with your primary domain, and conducting thorough testing using tools like mail-tester and Google Postmaster. I’ll also document every change made so you can replicate the process if needed. With my experience in system administration and network security, I’m confident I can help you achieve clean inbox delivery for your emails. Best regards, Mehran Riaz

@sarangdesigns

Hola. Entiendo perfectamente lo que necesitas. Configurar los registros DNS es solo la mitad del trabajo; la clave está en la reputación de la IP y la configuración de Exim. Realizaré lo siguiente: - Autenticación: Habilitaré SPF y DKIM desde WHM para firmar criptográficamente cada correo. - Seguridad: Ajustaré el Firewall (CSF/Imunify) para cerrar puertos vulnerables sin bloquear el tráfico de correo legítimo. - Validación: Te entregaré una captura de Mail-Tester con puntuación 10/10 y pruebas de entrega en Inbox (Gmail/Outlook). Tengo experiencia con acceso Root. Empecemos. Atentamente, Sarang A. Top 3 Percent Certified Freelancer